# Shift Work Alarm vs Authenticator

The clearest difference is ads: Shift Work Alarm at none against Authenticator's shown. Authenticator's advantage is device support (3 vs 1) and iOS requirement (18.0 vs 26.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Shift Work Alarm sells 2 in-app purchases, starting at $0.99 per month and Authenticator sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Shift Work Alarm against 5.0 for Authenticator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Shift Work Alarm | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/shift-work-alarm-roster/id6808283069/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/authenticator-2fa-mfa-otp/id6808388945/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 11 MB | 43 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [秋丽 陈](https://appshunter.io/developer/6803737891) | [Lumetro LLC](https://appshunter.io/developer/1802229122) |

## What reviewers say

### Shift Work Alarm

[App page](https://appshunter.io/ios/app/shift-work-alarm-roster/id6808283069)

This alarm clock is designed for individuals with non-traditional work schedules. It offers customizable alarms that can automatically skip holidays and follow specific shift patterns, ensuring you wake up on workdays and rest on days off. It also includes a smart calendar and spoken reminders for various needs.

**Highlights:** Shift-based alarms, Automatic holiday skipping, Customizable rotation patterns, Spoken reminders, Smart calendar view, Rings through silent mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shift Pro Monthly | $0.99 | per month |
| Shift Alarm Pro | $9.99 | per year |


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-2fa-mfa-otp/id6808388945)

Secure your online accounts with two-factor authentication generated directly on your device. Easily set up TOTP codes by scanning QR codes, which refresh every 30 seconds and function offline. Supports a vast range of popular services and offers encrypted backup and sync.

**Highlights:** Time-based one-time passwords (TOTP), Offline code generation, QR code setup, Encrypted backup and sync, Import from other authenticators, App Lock with biometrics, Password manager with autofill, Data breach monitoring

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator Premium | $9.99 | per 7 days |
| Authenticator Premium | $39.99 | per year |


## Frequently asked questions

### Is Shift Work Alarm free?

Shift Work Alarm is free to download, with in-app purchases available.

### Is Authenticator free?

Authenticator is free to download, with in-app purchases available.

### Which has better reviews, Shift Work Alarm or Authenticator?

Shift Work Alarm and Authenticator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Shift Work Alarm or Authenticator have ads?

Authenticator shows ads; Shift Work Alarm does not.

### Which is updated more often, Shift Work Alarm or Authenticator?

Shift Work Alarm ships an update every 4 days, and Authenticator every 4 days. Most recently, Shift Work Alarm was updated on October 12, 2026 and Authenticator on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*